Horatio matthews



May 24. 1927.

H. MATTHEWS PICTURE Filed July 30, 1926 picture.

Patented May 24, 1927.

' UNITED STATES 1,629,879 PATENT OFFICE.

EORATIO MATTHEWS, OF EALING, LONDON, ENGLAND.

PICTURE.

Application filed July 30, 1926, Serial No. 126,067, and in Great Britain December 10, 1925.

The present invention has for its objectto provide an improved methodof treating pictures which are to be viewed by transmitted light and particularly where such pictures are to be employed in combination with a device such as a rotary multi-coloured screen revolving around the source of light for changing the lighting effect by'which the picture is illuminated.

Whereas pictures intended to be viewed by. transmitted light are usually treated on the back with pigments in the usual method of the artist, according to the present invention stencilled coloured papers or masks are employed, patterns being cut out of the coloured papers in such manner as to produce the desired effect when the said papers or masks are placed against the back of the The stencilled coloured papers may be used alone or in combination with painted portions of the picture. A light-diffusing screen, plain or coloured, is employedbetween the back of the picture and the source of light.

When such pictures are illuminated through the medium of a multi-coloured rotary screen producing the changing coloured effects, such as sunset or sunrise, the coloured paper stencils or masks particularly when applied to the background or sky portion of the picture enhance or intensify by comparison the changing light effects on the other portions of the picture.

In the accompanying d rawings,

Fig. 1 is a back View of a picture prepared in accordance with the present invention for being viewed by transmitted light.

Fig. 2 is a sectional elevation showing a picture such as illustrated in Figure 1, combined with an illuminating apparatus of the kind having a multi-coloured screen rotated about a lamp by a propeller device or vanes operated by the heatofthe lamp.

In Fig. 1 the outline of the picture a on the front which in this instance consists of a photograph of a motor car, is shown in;

1 dotted lines.

mounted, and d is a light-diffusing screen mounted on a frame e which is secured to the back of the picture a or its frame 0 so as to be spaced a short distance therefrom to diffuse and soften the lighting effect. I

In'Figure 2 the frame 0 with the picture a, stencil 6, frame 0, and light-diffusing screen at is adapted'to slide into and out of the front of a casing 7 so as to enablethe pictures to be changed as required. The casing f is provided with a hinged top 9 and in the bottom of the casing is fitted an electric lamp h, the socket of which is ar- I ranged in the base of a semi-cylindrical hood or reflector 2', on the top of which is rotatably mounted a bell shaped multi-coloured transparent screen j, the bearing of which consists of an inverted cup is secured centrally of the screen 7' and mounted on a pin is on the top of the hood 2'.

The top of the screen 7' is formed with propeller vanes Z so that the screen, j is slowly rotated by the hot air arising from the lamp.

The-screen j is' divided vertically into two semicircular portions or segments m and n, the one of a reddish colour and the other of a bluish colour.

This screen 7' is made of very thin material and the adjacent edges of the segments m and n are so arranged as to abut and thus avoid any shadow when the said adjacent edges are passing between the lamp and the picture.

In use, when the lamp is switchedon and the multi-coloured screen j slowly rotated, the reddish and bluish segments thereof pass alternately between the lamp and the pic- V 1. The combination with a picture intended to be viewed by transmitted light, of I a coloured translucent stencil sheet applied to the back of the picture over those parts that are not tobe intensively illuminated, a light diffusing screen located a short 'distance from the back of the picture, a'souree of light and a multicoloured rotating screen surrounding the source of light.

2. The combination with a picture intended to be viewed by transmitted light, of a coloured translucent stencil sheet applied to the back of the picture, its body portion I covering the parts of the picture thatlare not to be intensively illuminated, and the margin outline ofthe parts of the picture that are to be intensively illuminated, a light dif- -fusing screen located a short distance from the back of the picture, a source of light and a multicoloured rotating screen surrounding the source of light.

g 'HORATIO MATTHEWS. 

